APA način citiranja

Roepke, S. E., & Duffy, J. F. (2010). Differential impact of chronotype on weekday and weekend sleep timing and duration. Dove Medical Press.

Čikaški stil citiranja

Roepke, Stephanie E., i Jeanne F. Duffy. Differential Impact of Chronotype On Weekday and Weekend Sleep Timing and Duration. Dove Medical Press, 2010.

MLA način citiranja

Roepke, Stephanie E., i Jeanne F. Duffy. Differential Impact of Chronotype On Weekday and Weekend Sleep Timing and Duration. Dove Medical Press, 2010.